TBH I think it makes sense that all houses should be connected to the electrical grid. Just like all houses should have proper sanitation facilities.

This is a small edge case for people who want to be self sufficient even though it makes no economic sense, as FPL does have net metering in place.

If they didn't have net metering in place I'd understand this, but considering they do and at first glance looks like a very reasonable program, is it really worth altering city and state building codes to allow it? The city/state would have to pay for very expensive specialists in off grid solar/battery/inverter setups to ensure they were at parity as a simple grid connection.